Erwin, SD Weather Forecast
Local 7-day forecast
Rain Showers Likely
Track current conditions, temperature changes, wind, and the full daily outlook for Erwin, SD in one place.
Rain showers likely. Cloudy, with a low around 42. Southeast wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
Local Weather Overview
This forecast page for Erwin, SD is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Oct 15, 2026 4:21 AM CDT.
The active forecast window currently covers Oct 15 to Oct 21, 2026 for Erwin, SD.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 15 to Oct 21, 2026
- Latest sync
- Oct 15, 2026 4:21 AM CDT
- Forecast office
- FSD
- Source
- NOAA / NWS
Daily Outlook
This Week in Erwin
Tuesday looks like the warmest upcoming period in Erwin at 69 degrees F.
Friday Night is the coolest period ahead with temperatures near 33 degrees F.
The strongest winds are forecast for Thursday Night at about 25 to 30 mph NW.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 15, 2026 4:21 AM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- FSD
- Radar station
- KFSD
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of rain showers before 2pm. Cloudy. High near 57, with temperatures falling to around 50 in the afternoon. West wind 5 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
A chance of rain showers between 11pm and 4am. Mostly cloudy, with a low around 37. Northwest wind 25 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Partly sunny. High near 50, with temperatures falling to around 47 in the afternoon. North northwest wind 10 to 25 mph, with gusts as high as 45 mph.
Areas of frost between 9pm and 2am. Clear, with a low around 33. West southwest wind 0 to 15 mph, with gusts as high as 25 mph.
Sunny, with a high near 63. South wind 15 to 25 mph, with gusts as high as 35 mph.
Mostly clear, with a low around 43.
Sunny, with a high near 67.
Partly cloudy, with a low around 42.
Sunny, with a high near 67.
Mostly clear, with a low around 44.
Sunny, with a high near 69.
Mostly clear, with a low around 50.
Mostly sunny, with a high near 69.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Oct 15
|
Rain Showers Likely
|
42°F |
5 mph
SE
|
|
Thursday
Oct 15
|
Chance Rain Showers
|
57°F |
5 to 25 mph
W
|
|
Thursday Night
Oct 15
|
Chance Rain Showers
|
37°F |
25 to 30 mph
NW
|
|
Friday
Oct 16
|
Partly Sunny
|
50°F |
10 to 25 mph
NNW
|
|
Friday Night
Oct 16
|
Areas Of Frost
|
33°F |
0 to 15 mph
WSW
|
|
Saturday
Oct 17
|
Sunny
|
63°F |
15 to 25 mph
S
|
|
Saturday Night
Oct 17
|
Mostly Clear
|
43°F |
20 mph
S
|
|
Sunday
Oct 18
|
Sunny
|
67°F |
5 to 15 mph
SSW
|
|
Sunday Night
Oct 18
|
Partly Cloudy
|
42°F |
5 mph
ENE
|
|
Monday
Oct 19
|
Sunny
|
67°F |
5 to 10 mph
E
|
|
Monday Night
Oct 19
|
Mostly Clear
|
44°F |
5 to 10 mph
SE
|
|
Tuesday
Oct 20
|
Sunny
|
69°F |
10 to 15 mph
SSE
|
|
Tuesday Night
Oct 20
|
Mostly Clear
|
50°F |
10 to 15 mph
SSE
|
|
Wednesday
Oct 21
|
Mostly Sunny
|
69°F |
10 to 15 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Erwin.
Nearby forecast pages are not available for this location yet.